LSI LSI53C895A, Technical Manual

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PCI Configuration Registers 4-17
Registers: 0x44–0x45
Power Management Control/Status (PMCSR)
Read/Write
PST PME Status 15
The LSI53C895A always returns a zero for this bit,
indicating that PME signal generation is not supported
from D3cold.
DSCL Data_Scale [14:13]
The LSI53C895A does not support the data register.
Therefore, these two bits are always cleared.
DSLT Data_Select [12:9]
The LSI53C895A does not support the data register.
Therefore, these four bits are always cleared.
PEN PME_Enable 8
The LSI53C895A always returns a zero for this bit to
indicate that PME assertion is disabled.
R Reserved [7:2]
PWS[1:0] Power State [1:0]
Bits [1:0] are used to determine the current power state
of the LSI53C895A. They are used to place the
LSI53C895A in a new power state. Power states are
defined as:
See Section 2.6, “Power Management,” in Chapter 2 for
descriptions of the Power Management States.
15 14 13 12 9 8 7 2 1 0
PST DSCL DSLT PEN R PWS[1:0]
0 0 0 0 0 0 0 0 x x x x x x 0 0
0b00 D0
0b01 D1
0b10 D2
0b11 D3hot